* For countries where LTE is not yet available, Asus will replace the model with a 3G variant that has HSPA+ capabilities.
As for the WiFi-only model, Asus is using a separate processor to enable the tablet to do better in HD gaming.
---ooo---

**SPECULATION: The Tegra 3 is compatible with 4G LTE/3G, it's just not integrated with each other, unlike the Krait. Which is why, I think, the 300 series is thicker. Because there will be a separate LTE baseband attached.

Updated the post with some links. There's no news about the compatibility of docks between all the models. I hope Asus does a better job with the OTHER hardware though (the loose pins and everything) and not just with the back plates. Even if they put plastic on it, if they manufacture it wrong, it still won't work... :|

what I don't understand is this:
"There’s a silver lining to the WiFi-only nature of the device in the FCC: it gets the latest and greatest in processors. Nvidia’s Tegra 3 platform is currently incompatible with LTE radios..."

So I don't understand why they have the 300 on Tegra 3 WITH 4G LTE/3G when it's incompatible... Although a wifi only model wasn't announced in MWC, I guess they're still making one according to the FCC:
"Asus is only seeking certification for the WiFi version in the United States so far – it looks like it’ll be a while before the LTE version makes it here, if ever."

I'm confused about the whole bluetooth/wifi thing though. I'm no expert on this so... :/